Showing posts with label Civil. Show all posts
Showing posts with label Civil. Show all posts

Sunday, January 23, 2011

10 Construction Projects That Broke the Bank

We live in an era in which practically anything that can be imagined can be built: artificial islands, floating hotels, skyscrapers that cause passersby to strain their necks just looking up at them, massive underwater tunnels and bridges spanning once-unthinkable lengt­hs. But with these great construction projects come complications, including cost overruns, accidents and even utter disaster. For every great success, such as Dubai's super-swank, self-proclaimed seven-star Burj Al Arab hotel, there's a project like North Korea's Ryugyong Hotel, mired in controversy, uninhabitable and looming over the Pyongyang skyline.

In this article, we're going to take a look at 10 construction projects that broke the bank, including the Ryugyong Hotel. In making up our list, we looked at a variety of criteria: overall cost, cost overrun, size, ambition and general notoriety. Some of these projects took decades to plan and co­nstruct; a couple aren't finished and may never be. Several can be called white elephants -- eyesores or constructions infamous for their cost or general uselessness. Others fulfill their expected purposes, perhaps even serving as gems of modern engineering, but they remain controversial or well known for the costs and challenges they incurred.

­We're going to start with some lesser-known but still astoundingly pricey construction projects and then move on to some of the most famous culprits, such as the Chunnel and the Big Dig.


10. Ryugyong Hotel 

The Ryugyong Hotel dominates the Pyongyang skyline but is uninhabitable.

­Esquire magazine called it "The Worst Building in the History of Mankind" [source: Hagberg]. It's also been called the "Hotel of Doom," the "Phantom Hotel" and the "world's worst building"­ [source: Herskovitz]. It's the Ryugyong Hotel in Pyongyang, North Korea. This 105-story monstrosity rises 330 meters (1,082 feet) into the air, composed of three slabs that meet at the building's apex, forming a sort of pyramid.

The building was intended to be a 3,000-room hotel. It's among the world's tallest skyscrapers and could be considered the world's tallest hotel, except that it hasn't been used as a hotel -- or anything else. That's because the Ryugyong Hotel has never been completed, although it has been built to its intended height.

Construction began in 1987 and stopped in 1992 after North Korea spent as much as 2 percent of its GDP on the project and funding dried up. Exact figures are difficult to get, owing to the communist government's extraordinarily repressive and secretive nature, but North Korean GDP was estimated to be $21.3 billion in 1994, and 2 percent of that is $426 million.

The unattractive gray building is certainly a white elephant. The North Korean government routinely airbrushes it out of official photos, despite initially bragging about the building in state-run media and distributing postage stamps featuring its image.

­Work on the building resumed in 2008 with an Egyptian company called Orascom entrusted with refurbishing the moribund hotel. But even if they complete the interior, some experts wonder if the Ryugyong's apparently shoddy construction will ever be safe enough to be occupied.



9. Iridium Satellites

A Delta II rocket launches Iridium's last five satellites in 2002 from Vandenberg Air Force base, California.

­Conceived in 1987 by engineers from Motorola, who provided much of the financial backing, Iridium is a network of 66 satellites (and 13 in-orbit "spares") intended to provide worldwide satellite phone, data and fax services. Iridium was supposed to allow people to communicate anytime, anywhere.

Iridium LLC was created in 1992. Limited service began in 1998. Only 474 days later, the company filed for Chapter 11 bankruptcy protection.

The main problem was the tremendous initial cost of launching the satellites: $5 billion . Iridium charged high fees and needed at least 1 million subscribers just to stay out of the red. But many traditional GSM cell phone providers began providing their customers cheap roaming services across state and international boundaries, eliminating one of the main advantages of Iridium -- worldwide service. Iridium's phones were bulky, didn't work indoors and were extremely expensive, with one Motorola model costing more than $2,000.

­Iridium only managed to accrue 55,000 subscribers. Several of the satellites weren't launched, and for a time, it seemed that the satellites would simply be deorbited and burn up in the atmosphere. The existing satellites were eventually sold to a new company called Iridium Satellite for just $20 million. In 2002, Iridium Satellite launched the last five satellites. As of 2008, Iridium Satellite claimed that they had around 250,000 subscribers, including many from the military.



8. MOSE Project

Tourists cross makeshift walkways in the flooded Piazza San Marco during December 2008.

Some projects never seem to finish. This one can't get started. The MOSE Project -- named after the biblical Moses and the acronym Modulo Sperimentale Elettromeccanico (or experimental electromechanic module for non-Italian speakers) -- is the result of 30 years of negotiations first begun after Venice experienced a catastrophic flood in 1966.

The project hopes to stem flooding and save the city from sinking deeper into the lagoon on which it's located. In the last century, Venice has sunk 11 inches (or about 28 centimeters). And whereas in the early 20th century, Venice experienced flooding about seven times a year, it now happens around 100 times a year .

MOSE calls for 78 hinged metal gates to be placed along three channels in the Venice lagoon. The gates could be as large as 66 feet (20 meters) wide, 16 feet (5 meters) thick and 92 feet (28 meters) long [source: Squires]. The 300-ton (272-metric ton) gates mostly will be on the seafloor. But when water levels reach a certain level, the barriers will automatically fill with air, rising within 30 minutes and creating a dam 0.93 miles (1.5 kilometers) long. When the waters recede, the gates can descend back to the seafloor in 15 minutes.

Like many projects of its type, cost estimates vary wildly -- from $5.5 billion to $10.4 billion .

­Construction finally began in May 2003 and should be finished in 2012, but environmental groups and maritime-related businesses have raised concerns about the project, so the work is far from done.



7. FIA Satellites

 The Future Imagery Architecture program was designed to be the U.S. government's next-generation system of spy satellites, capable of operating at night or peering through poor weather. A contract for two satellites was awarded to the Boeing Company, which wasn't known for its ability to manufacture satellites with sophisticated optics.

A team from Boeing asked for $100 million just to put together its proposal for the FIA project .

­Boeing's design, which was highly ambitious in order to compete with the more experienced Lockheed Martin Corporation, ended up being too complex to be built. But before that conclusion was reached, Boeing often received faulty parts from suppliers or simply used the wrong ones. The government spent $10 billion on the project, about twice as much as was initially budgeted, before revoking the Boeing contract and turning to Lockheed Martin . Boeing still asked for a $500 million "termination fee" and received $430 million for its troubles. The company also was allowed to fulfill the contract for one of the satellites that used advanced radar for imaging.

­The entire program was finally scrapped in September 2005, and the government may have spent up to $18 billion. In 2007, another classified U.S. spy satellite program was axed by then-Director of National Intelligence Mike McConnell.



6. Montreal-Mirabel Airport

This picture sums up the state of Montreal-Mirabel these days: empty.

­One of the world's largest airports sits practically empty and unused. Montreal-Mirabel Airport is a $1 billion airport located 40 miles (64 kilometers) from Montreal, Canada. The airport opened in 1975 during a time when Montreal was experiencing a building boom in preparation for the Olympics.

Montreal-Mirabel was supposed to be one of the world's major airports, taking in 50 million passengers a year with six runways and six terminals. It didn't even manage to crack 3 million, and the last passenger flight took off on Oct. 31, 2004.

The airport's failure can be attributed in part to bureaucratic and political struggles, particularly relating to groups lobbying for Quebec's independence, which prevented lawmakers from settling on a plan to create transportation routes linking the airport to downtown Montreal. Banks, businesses and English-speaking Montreal residents left as squabbles over Quebecois separatism intensified, bogging down the region's economy. The 1970s energy crisis also harmed the aviation industry.

The airport was intended to be a hub for quick trans-Atlantic flights on the Concorde, another infamous boondoggle. Instead, traffic was stolen away by Montreal-Dorval Airport (now called Montreal-Pierre Elliott Trudeau International Airport), which expanded to take advantage of the newly ascendant Boeing 747.

­In February 2006, the Montreal Airports Authority announced a deal with two French developers to turn Montreal-Mirabel into a massive space-and-water-themed amusement park. The first of three renovations is expected to cost $100 million. As of early 2009, construction on the theme park hadn't begun.



5. Sagrada Familia 

The Sagrada Familia has been under construction for more than 130 years.

The Sagrada Familia, or the Expiatory Temple of the Holy Family, is a cathedral located in central Barcelona, designed by legendary architect Antoni Gaudi. Construction began on March 19, 1882, and continued until Gaudi was hit by a streetcar and killed in 1926. At that time, only 15 percent of the building was completed. It's still not finished.

Construction has been halted frequently because of lack of funding, with donations providing a lot of the necessary financing. In recent years more money has poured in, and the church has benefited from its status as a UNESCO World Heritage Site.

The sheer scope and ambition of the project have also made work proceed slowly, and some original plans and models were destroyed during the Spanish Civil War. Sagrada Familia is a gorgeous cathedral, with delicately shaped spires rising high into the sky. The structure is filled with tremendously detailed carvings, sculptures, friezes and other ornamentation.

­Construction is scheduled to be completed in 2026, and despite ongoing work, Sagrada Familia remains Spain's most popular monument. However, 400 prominent Spanish artists and intellectuals released a statement in December 2008 saying that construction should stop. They argued that the building no longer matches Gaudi's artistic vision and has been compromised in the name of tourism. But defenders of the ongoing construction say that Sagrada Familia is great precisely because it's a collective work, clearly bearing Gaudi's imprimatur but also featuring contributions from workers and artists over many decades.



4. The International Space Station

Computer-generated artist's rendering of the International Space Station as of Aug. 30, 2007

Between 1984 and 1993, $11.2 billion was spent on Space Station Freedom, the U.S. predecessor to the International Space Station (ISS). When the ISS replaced Space Station Freedom, President Clinton pegged the cost of the new project at $17.4 billion. In 2006, the Government Accountability Office said that $35 billion had been spent since 1985 and that it would take about $100 billion to complete the station .

There are many complicating factors in figuring out the station's approximate cost. It receives major contributions from a group of countries: the United States, Russia, Japan and 10 members of the European Space Agency. Shuttle flights, refueling, maintenance and other related costs may or may not be included in estimates, likely contributing to NASA saying that the station will be cheaper than the GAO's estimate. There are also unforeseen costs and setbacks, such as the tragedy of the Space Shuttle Columbia disaster.

When considering costs, are we asking how much is it to complete the station or to complete and run it for a certain period of time? The European Space Agency states the estimated cost will be 100 billion euros ($123 billion) to assemble the station and run it for 10 years.

­No matter the final cost, the space station is certainly the most expensive science experiment ever attempted. But proponents of the station argue that it is an unprecedented opportunity for international cooperation, to test the limits of space technology and to conduct valuable, potentially groundbreaking research in a unique environment.



3. The Millennium Dome

The Millennium Dome, now known as the O2 Arena, is considered a white elephant by many Britons.

­Perhaps as close as one gets to a literal white elephant, this white, domed behemoth, built to house a celebration for the new millennium, has become an embarrassing eyesore for many Londoners. The Millennium Dome has been controversial ever since its inception in the mid-1990s.

Costs rose throughout the planning and construction phases, with the British government regularly dispersing more money to the dome's builders. In the end, the dome cost 789 million pounds ($1.1 billion) to build .

Ticket sales for the attractions were far below expectations. The New Millennium Experience Company, the dome's operator, only made 189 million pounds ($275 million) in revenues. There were accusations of fraud by vendors and suppliers. A band of thieves even attempted to steal a 203-carat diamond on display.

The dome was only open for a year, closing on Dec. 31, 2000 -- just before the start of the new millennium. In 2001, maintenance costs were 28.4 million pounds ($41.3 million).The following year, monthly maintenance alone clocked in at 250,000 pounds ($363,950).

­For a time, it was unclear what the dome's post-celebration role would be, or if it would just be an ugly reminder of hundreds of millions of pounds wasted. Eventually the naming rights to the dome were sold to mobile phone company O2. On July 24, 2007, the dome reopened under the name the O2 Arena after Anschutz Entertainment, the venue's new owners, spent 600 million pounds ($1.2 billion) to renovate the site, adding a 20,000-seat concert arena. It's now used to host concerts, sporting events, traveling exhibitions and a movie multiplex.



2. The Chunnel 

Vehicles approach the entrance of the Channel Tunnel on June 27, 2006, in Folkestone, England.

The Chunnel, or the Channel Tunnel, is a trio of 31-mile (50-kilometer) long tunnels underneath the English Channel, connecting the United Kingdom and France. When finished in 1994, the Chunnel's $21 billion cost made it the most expensive construction project in history . Construction involved 13,000 engineers and workers, 250,000 engineering drawings and, sadly, 10 deaths.

Building the Chunnel took six years, but plans for constructing some sort of underwater tunnel spanning the English Channel dated back to 1802, with many false starts along the way. Several pilot tunnels, some thousands of feet long, were dug in the late 19th century. In the 20th century, it took the British and French governments decades to finalize plans for construction. The project was canceled more than once but finally came together in the late 1980s.

­Besides a few incidents of fires, the Chunnel has been largely successful, providing a popular method of transport for people and freight between the United Kingdom and France. But the project's initial cost was severe, and it continues to exact a heavy financial toll. In early 2009, a new rail link connecting London to the British side of the Chunnel opened. It cost $13.8 billion -- the most expensive individual construction effort in the country's history.


1. The Big Dig 

 It doesn't look like much, but that little section of highway and underground Boston from which cars are exiting cost a lot of money.

­In 1980s Boston, traffic on the city's Central Artery lasted 10 hours a day and cost the local economy about $500 million. In response, the Central Artery/Tunnel Project -- or Big Dig -- was launched to replace th­e six-lane Central Artery with an underground road with eight to ten lanes. The project, one of the most difficult infrastructure projects ever attempted, also involved the construction of several other major bridges, roads and tunnels, some of them going under Boston Harbor.

Construction began near the end of 1991 and finished on Dec. 31, 2007. The original cost estimate was $2.6 billion, eventually rising to $14.8 billion by the time the project was done. But with the interest due on borrowed funds -- which will be paid through 2038 -- the Big Dig will eventually cost $22 billion.

The city practiced a process it called mitigation to minimize harm to residents' daily lives and commutes. But mitigation also contributed to the project's massive cost overruns and didn't always work. Some businesses suffered because of the rampant construction.

There were other setbacks through flaws in design or construction, the deaths of four workers and one motorist, criminal charges against some companies and numerous lawsuits. But many aspects of the project's work -- which employed as many as 5,000 workers on some days -- have been called marvels of engineering. And the Big Dig has reunified the city, improved traffic flow greatly, opened up new parts of the city to development and added green space.

by Jacob Silverman

Sunday, May 2, 2010

The Most Popular and Diverse International Underground Transit Systems

When you're traveling around the world, it's good to know that there are public transit systems available to help you get where you want to go. Underground subway systems offer the convenience of getting where you want when you want without the hassle of having to flag down a taxi or rent a car. In just about all cases, it's the most cost effective option.

There are some beautiful, modern, and vast rapid transit systems throughout the world. The most popular and diverse international underground transit systems are listed below, but are merely a sample of the quite eye-catching transit systems that exist throughout the world.


Stockholm Tunnelbana (Sweeden)

`Subway stations are usually designed in a clean and modernistic style in order to make people forget they are traveling deep underground. It is different in the Stockholm subway though, in which several of the deep underground stations are cut into solid rock which were left with cave-like ceilings. Oldnature meets nextnature. The fine ‘cave paintings' make the finishing touch.


Munich U-Bahn (Germany)

Munich Public Transport System (MVV) is a splendidly constructed system consisting of dozens of S-Bahn (suburbian trains), U-Bahn (subway), Tram-Bahn / Straßenbahn (streetcar) and bus lines, connecting all parts of the city perfectly. This metro system has been opened in 1972 and has spacious and clean stations. The earlier ones are rather minimalistic in design while the later ones got more interesting architectural features and some works of art.


Shanghai Bund Sightseeing Tunnel (China)

This has to be one of the most surreal, psychedlic and fun forms of public transport. The Tunnel connects East Nanjin Rd on the Bund, and Pudong near the Oriental Pearl TV Tower, running under the Huangpu river. It's a psychedelic trip in a glass capsule along the 647 metre flashing, strobing tunnel.



Moscow's Komsomolskaya Station (Russia)

The Komsomolskaya station of the Moscow Metro is the most famous of all those on the Koltsevaya Line and of the whole system, and an icon of Moscow itself, partly due to it being located on Moscow's busiest transport hub, Komsomolskaya Square, which serves three railway terminals: Leningradsky, Yaroslavsky and Kazansky. The station's connotation is of a gateway to Moscow and to the rest of Russia, and its theme is of the patriotic history and inspiring future of the nation. It was opened on 30 January, 1952, as part of the second stage of the Ring line.


Frankfurt's Bockenheimer Warte station

A weird subway entrance, looking like a train bursting through the sidewalk from below, is located in Frankfurt. Architect Zbiginiew Peter Pininski reported he felt inspired by surrealist artist René Magritte when creating it.


Metro Bilbao (Basque Country)

Bilbao, a small city in the Basque region, is proud of their subway system, not only because of its speed and efficiency, but also because of its design. Norman Foster, the architect who did the Reichtag in Berlin, the Gherkin in London, and the world's largest airport in Hong Kong, designed Bilbao's metro stations. The stations are well-lit and spacious. Foster uses a simple, yet aesthetically pleasing design, especially with the support beams, staircases, and lights. The entrances are especially unique. Nicknamed “el Fosterito,” the entrances are glass round tubes that emerge to the street level.


New York's City Hall station (US)

While the stations of the subway are now often dirty, ugly, and are marginally welcoming places, this is not always the case. New York City once had the imagination to build stations which were beautiful as well as practical. The City Hall station remains the most impressive subway station in New York, and yet it hasn't been used since 1945.


Chicago's O'Hare Station (US)

The O'Hare terminal station was built in 1984, looking toward the airport terminal from the platforms. The curved sidewalls of glass block, backlit in different colors, illuminate the platforms and absorb sound in the station. The stairs and escalators at the end of the platforms ascend through a gray metal wall that mimics an airplane fuselage to deliver passengers to the fare controls and out into the airport terminal.


Dubai Metro Stations (UAE)

The elevated and at-grade Dubai Metro stations combine both heritage and modern designs. They have been modelled on the shape of seashell, inspired from the diving and pearl-fishing heritage of the UAE, while the interior design depicts the four elements of nature – water, air, earth and fire. Conceptual design of some stations includes traditional architectural ingredients used in antique Arab buildings such as wind towers, oriels, alleyways or internal arches.


Pyongyang Metro (North Korea)

Built to link secret underground military facilities, the Pyongyang Metro is nevertheless an important part of the transport infrastructure in the capital of North Korea (officially, the Democratic People's Republic of Korea or DPRK). There is evidence that it includes secret government-only lines, although the extent of these, if they exist, is unknown. Its station architecture is among the most attractive in the world. However, relatively little is known about the Metro outside the country, as few visitors are able to investigate the system.

Saturday, March 27, 2010

Top 10 Iconic Buildings

There are many different types of buildings all throughout the world, and occasionally a building is built that captivates a city or even a nation. Over time these buildings become the defining pinnacle of the greatness of the city they improve the skyline of. This is a list of buildings that the world wouldn’t be the same without.

10. Hagia Sophia


 Built on the site of a 4th century church, of which nothing remains, the Hagia Sophia has been a focal point in Istanbul (formerly Constantinople) ever since. The great church is now a museum but it wasn’t always so: for centuries it served as a pillar of the Greek Orthodox Church and then as an Islamic Mosque. The second church was destroyed by a fire during the Nika Riots in 532, although remnants of it can still be seen today. The Hagia Sophia that can be seen today was built between 532 and 537 and is one of the greatest surviving examples of Byzantine architecture. The biggest draw to the ancient church is the impressive 102 foot diameter dome which reaches 182 feet into the sky. Other stunning characteristics of the Hagia Sophia are the countless mosaics, the Loge of the Empress, the Marble Door, the Sultan’s Lodge, Mahmut I’s Library and the Marble Jars.

Who built it?
The first church was built on the spot where a pagan temple had stood, by Emperor Constantine himself in 360. In 405 the second church was built by Constantine’s son, Theodosius II. The third and final Hagia Sophia was built by Justinian in 532. In 1453 Sultan Mehmet II conquered Constantinople and turned it into a mosque, and subsequent sultans have made various additions since then.

 
9. The Louvre


One of the most easily recognizable museums in the world, the Louvre’s Palace and the recently added glass pyramid are as beautiful to those who visit as the priceless works of art that it houses. But it wasn’t always a museum, it was originally built in the 12th century as a museum but in the 14th century it was converted into a royal residence. In 1750 Louis XV turned it back into a royal museum to house parts of the royal collection. During the French Revolution it underwent another transformation, this time from royal to public museum. Throughout the years it has been added to by Napoleon I and restored by Louis XVIII and Charles X. Today the Louvre holds 380,000 pieces; 35,000 of which are on display, including such important works as The Mona Lisa and The Venus de Milo.

Who built it?
Philip II built the Louvre Palace as a fortress somewhere between 1190 and 1202, although most of the original structure has been destroyed. The Salle Basse (Lower Hall) is all that remains of the Medieval Louvre.

 
8. The Burj Al Arab


In a city famous for its architecture, the Burj Al Arab defines the Dubai skyline. The newest building on a long list of architecture built on a grand scale, the Burj Al Arab was built in 1994 and is one of the most luxurious hotels in the world. Perched on a man-made island in the Persian Gulf, it was built to mimic the sail of a dhow. The hotel features a 590-foot tall atrium, a large seawater aquarium, two restaurants (one of which was voted in the top 10 restaurants in the world by Conde Nast) and 202 luxuriously appointed suites.

Who built it?
The Burj Al Arab was designed by Tom Wright and built by Atkins for Jumeirah Hotels and Resorts. It is currently the second largest hotel in the world.

 
7. Sydney Opera House

Rising out of the Sydney Harbour, the Sydney Opera House is not only the center of the arts scene in Australia but also stands out as a must see to anyone visiting the area. In the late 1940’s Eugene Goossens, the Director of the NSW State Conservatorium of Music lobbied for a new venue for large productions. In 1955 a design competition was held by NSW Premier Joseph Cahill, and by 1958 construction had begun. The winning design features several concrete shells and houses performance spaces like the concert hall, the opera theater, the drama theater, the studio, the Utzon room, the forecourt as well as a recording studio, five restaurants, four souvenir shops and a guided tour operation.

Who built it?
The winning designer was Jørn Utzon, an architect from Denmark. When Cahill insisted on radical changes to the design, Utzon resigned mid-construction and the project was finished without him. In the 90s, the Sydney Opera House Trust reconciled with Utzon, naming him a design consultant for future work but he died in November of 2008.

 
6. Empire State Building


Once the tallest building in the world, no film or television show set in New York is complete without including a shot of the grand Art Deco skyscraper. Originally the site of the Waldorf-Astoria, construction of the Empire State Building began on St Patrick’s Day 1930. 410 days later construction was finished and it won the title of world’s tallest building, surpassing both 40 Wall Street and the Chrysler Building, which were being built around the same time. The opening of the building coincided with the Great Depression so it sat almost empty for the next 20 years. This wasn’t the only challenge the building has had to face: there was a 1945 plane crash, shootings in 1997, and more than 30 suicides. Through it all the Empire State Building has endured as a timeless monument of New York City.

Who built it?
The Empire State Building was designed by William F. Lamb, based on the designs for the Reynolds Building in Winston-Salem North Carolina and the Carew Tower in Cincinnati Ohio. Because of this, the staff of the Empire State Building sends a Father’s Day card to the staff of the Reynolds Building every year.

 
5. Taj Mahal


The crowning jewel of India, the Taj Mahal is a testament to one man’s love for his wife. It looks like a palace, but it was actually built as a tomb for the Emperor’s favorite wife. Construction began one year after her death in 1632 and the mausoleum was completed in 1648 with the surrounding buildings and gardens taking another five years to complete. The construction took 20,000 workers and craftsmen that were recruited from all across northern India. Soon after the Taj Mahal was completed, the Emperor was deposed by his son Aurungzeb and put under house arrest. When the Emperor died in 1658, he was buried beside his wife inside the Taj Mahal. During world War II the Indian government erected scaffolding around the Taj to mislead German and Japanese bomber pilots. Today the Taj Mahal is under a different threat: acid rain and pollution from the Mathura Oil Refinery has begun to turn its white marble yellow.

Who built it?
The Taj Mahal was built by Mughal Emperor Shah Jahan when his third wife Mumtaz Mahal died while giving birth to their fourteenth child, Gauhara Begum. He exchanged a large palace in the center of Agra with Maharajah Jai Singh for the three acres of land where the Taj now sits.

 
4. Eiffel Tower


Towering high above Paris, the Eiffel Tower was built between 1887 and 1889 and acted as the entrance arch for the Exposition Universelle, which marked the centennial of the French Revolution. The tower was only supposed to stand for 20 years but it was a valuable communication tool and remained as an unmistakable element of the Paris skyline (especially as buildings in the city cannot surpass seven stories). During the German occupation of Paris during World War II, the lift cables were cut forcing German soldiers to climb the stairs to the top to hoist the swastika. Within hours of the Liberation of Paris, the lifts were back in working order.

Who built it?
The Eiffel tower was designed by engineer Gustave Eiffel who had originally submitted the design to Barcelona for the Universal Exposition in 1888 but they refused. When it was built, he engraved the names of 72 French scientists, engineers and other notable Frenchmen.

 
3. Big Ben


One of the world’s most famous clocks, Big Ben is actually the name of one of the bells but over the years it has come to be used for both the clock and the tower as well. It was completed during the restoration of the Palace of Westminster in 1858. The tower stands 316 feet tall, each clock face is 23 feet square with 4 foot numbers and the great bell is seven and a half feet tall and weighs 13 tons. Nobody knows exactly whom Big Ben is named after but common theories include Sir Benjamin Hall (who oversaw the installation of the bell) or English Heavyweight Boxing Champion Benjamin Count.

Who built it?
Charles Barry designed Westminster Palace, however, Augustus Pugin created the clock tower. Pugin fell into madness and died in 1852 and Big Ben was the last building he would ever design. The clock itself was designed by Beckett Denison.

 
2. The Colosseum


The largest Roman amphitheater ever built, the Colosseum is one of the greatest architectural feats ever achieved by the Ancient Romans. Construction began between 70 and 72 AD and was finished in 80 AD. It was capable of seating 50,000 people and was usually used for gladiatorial games, but could also be used for public spectacles, mock sea battles, animal hunts, executions, reenactments of battles, and dramas based on Classical Mythology. During the medieval era its entertainment purposes ended and it has since been used as housing, workshops, a fortress, a quarry, quarters for a religious order, and a Christian shrine. Today the Colosseum is one of the most popular tourist attractions in Rome and attracts thousands of visitors every year.

Who Built it?
The Colosseum was imagined by Emperor Vespasian who used the vast treasure seized during the Great Jewish Revolt in 70 AD to fund its construction. It was built up to the third story when Vespasian died in 79 AD, but his son Titus finished it and inaugurated it in 80 AD.

 
1. The Giza Pyramids


The oldest buildings on this list, the pyramids on the Giza plateau have intrigued mankind for centuries. Not only have they stood the test of time, but the accuracy with which they were built is impressive even by today’s standards. They were built as tombs for three separate pharaohs during the Third and Fourth Dynasty. It is also the only surviving wonder of the ancient world and was the tallest building in the world until 1300 when it was surpassed by the Lincoln Cathedral. Despite their long history, or perhaps because of it, mysteries have swirled around the pyramids since they were found by the Ancient Greeks thousands of years ago. How were they built? How many people worked on the project? How long did the construction take? What was the Egyptians’ understanding of astronomy, mathematics, and geography? And even crazy questions like: did aliens help in their construction? While these questions go unanswered, all we are left to do is marvel at a culture who were master builders even before the invention of the wheel.

Who built it?
The oldest and largest of the three pyramids was built by Khufu between 2551 and 2531 BC. The second was built by Khufu’s grandson Khafre between 2558 and 2532 BC. And the third pyramid belongs to Khafre’s son Menkaure and despite not knowing the exact date of the construction many believe that it was finished somewhere around 2490 BC, several years after his death.

Saturday, March 13, 2010

7 Biggest Holes On Earth

1. Mir Mine also called Mirny Mine was an open pit diamond mine located in Mirny, Eastern Siberia, Russia. The mine is 525 meters (1,720 ft) deep and has a diameter of 1,200 m (3,900 ft), and is the second largest excavated hole in the world, after Bingham Canyon Mine. The airspace above the mine is closed for helicopters because of a few incidents in which they were sucked in by the downward air flow.
 

  

  

  

  

  

  

  

 2. The Big Hole is located in the city of Kimberley which is the capital of the Northern Cape of South Africa. Today the Big Hole is some 1,500 feet wide and over 42 acres in surface. When above ground mining stopped at the Big Hole in 1914, it was some 785 feet deep.

  

  

 3. The Bingham Canyon Mine is an open-pit mining operation extracting a large porphyry copper deposit southwest of Salt Lake City, Utah, USA, in the Oquirrh Mountains. The mine has been in production since 1906, and has resulted in the creation of a pit over 0.75 miles (1.2 km) deep, 2.5 miles (4 km) wide, and covering 1,900 acres (7.7 km?). According to Kennecott, it is the world's largest man-made excavation.
 

  

  

  

  

 4. The Diavik Diamond Mine is a diamond mine in the North Slave Region of the Northwest Territories, Canada, about 300 kilometres (186 miles) north of Yellowknife.
 

  

  

 5. The Great Blue Hole is a large underwater sinkhole off the coast of Belize. It lies near the center of Lighthouse Reef, a small atoll 100 kilometres (62 mi) from the mainland and Belize City.
 

  

  

 6. Glory Hole - Monticello Dam, California A glory hole is used when a dam is at full capacity and water needs to be drained from the resevoir. Close-up of Monticello Dam. Its the largest in the world, enabling it to consume 400 cubic feet of water every second. The Monticello Glory Hole can be seen at the top left of this photo. Water entering the top shoots out seconds later below.
 

  

  

  

 7. Guatemala Sinkhole. 80 feet in diameter and 15 feet deep, a huge sinkhole opened up in the middle of Montrose Avenue after a water main break flooded the tarmac. A sinkhole is caused when water (usually rainwater or sewage) is soaked up by the earth on a large scale, resulting in the ground collapsing.